Comparison of Three Artificial Diets for the Larviculture of Giant Kōkopu (<i>Galaxias argenteus</i>)
The selection of artificial feed is critical to the success of larviculture of fin fish and requires knowledge of the varied species-specific dietary and nutritional requirements. With the emergence of commercial aquaculture of giant kōkopu, <i>Galaxias argenteus</i>, there is a need to...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-10-01
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| Series: | Fishes |
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| Online Access: | https://www.mdpi.com/2410-3888/7/6/310 |
| _version_ | 1827639703806935040 |
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| author | William McKay Andrew Jeffs |
| author_facet | William McKay Andrew Jeffs |
| author_sort | William McKay |
| collection | DOAJ |
| description | The selection of artificial feed is critical to the success of larviculture of fin fish and requires knowledge of the varied species-specific dietary and nutritional requirements. With the emergence of commercial aquaculture of giant kōkopu, <i>Galaxias argenteus</i>, there is a need to understand the species-specific needs for artificial feeds in larviculture. Consequently, this study compares three commercial artificial dry feeds; Otohime, Artemac and O.range on the growth of recently weaned giant kōkopu. Larvae fed with Otohime outperformed both Artemac and O.range treatments by achieving the highest wet weight after 67 days, greater by at least 47% on average than both Artemac and O.range. These differences in larval performance are likely to be due to the higher protein:energy ratio and EPA content of Otohime. High DHA and ARA in the diets in absolute terms or in relation to EPA did not result in added benefit for growth performance. This study provides an important first step in identifying the nutritional needs of larval giant kōkopu which can assist in improving their commercial aquaculture production. |
| first_indexed | 2024-03-09T16:44:54Z |
| format | Article |
| id | doaj.art-53b0553b5d8947b099ea909b6428127c |
| institution | Directory Open Access Journal |
| issn | 2410-3888 |
| language | English |
| last_indexed | 2024-03-09T16:44:54Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Fishes |
| spelling | doaj.art-53b0553b5d8947b099ea909b6428127c2023-11-24T14:47:28ZengMDPI AGFishes2410-38882022-10-017631010.3390/fishes7060310Comparison of Three Artificial Diets for the Larviculture of Giant Kōkopu (<i>Galaxias argenteus</i>)William McKay0Andrew Jeffs1Institute of Marine Science, University of Auckland, Auckland 0985, New ZealandInstitute of Marine Science, University of Auckland, Auckland 0985, New ZealandThe selection of artificial feed is critical to the success of larviculture of fin fish and requires knowledge of the varied species-specific dietary and nutritional requirements. With the emergence of commercial aquaculture of giant kōkopu, <i>Galaxias argenteus</i>, there is a need to understand the species-specific needs for artificial feeds in larviculture. Consequently, this study compares three commercial artificial dry feeds; Otohime, Artemac and O.range on the growth of recently weaned giant kōkopu. Larvae fed with Otohime outperformed both Artemac and O.range treatments by achieving the highest wet weight after 67 days, greater by at least 47% on average than both Artemac and O.range. These differences in larval performance are likely to be due to the higher protein:energy ratio and EPA content of Otohime. High DHA and ARA in the diets in absolute terms or in relation to EPA did not result in added benefit for growth performance. This study provides an important first step in identifying the nutritional needs of larval giant kōkopu which can assist in improving their commercial aquaculture production.https://www.mdpi.com/2410-3888/7/6/310aquaculturewhitebaitlarval dietformulated feedPUFAHUFA |
| spellingShingle | William McKay Andrew Jeffs Comparison of Three Artificial Diets for the Larviculture of Giant Kōkopu (<i>Galaxias argenteus</i>) Fishes aquaculture whitebait larval diet formulated feed PUFA HUFA |
| title | Comparison of Three Artificial Diets for the Larviculture of Giant Kōkopu (<i>Galaxias argenteus</i>) |
| title_full | Comparison of Three Artificial Diets for the Larviculture of Giant Kōkopu (<i>Galaxias argenteus</i>) |
| title_fullStr | Comparison of Three Artificial Diets for the Larviculture of Giant Kōkopu (<i>Galaxias argenteus</i>) |
| title_full_unstemmed | Comparison of Three Artificial Diets for the Larviculture of Giant Kōkopu (<i>Galaxias argenteus</i>) |
| title_short | Comparison of Three Artificial Diets for the Larviculture of Giant Kōkopu (<i>Galaxias argenteus</i>) |
| title_sort | comparison of three artificial diets for the larviculture of giant kokopu i galaxias argenteus i |
| topic | aquaculture whitebait larval diet formulated feed PUFA HUFA |
| url | https://www.mdpi.com/2410-3888/7/6/310 |
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